BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-8178
DTSTART:20230413T203000Z
DTEND:20230413T213000Z
DTSTAMP:20260414T065809Z
LAST-MODIFIED:20230413T141259Z
LOCATION:CH 4274
SUMMARY:LDMX: The Light Dark Matter eXperiment\, NPAC (Nuclear/Particl
 e/Astro/Cosmo) Forum\, Matthew Solt\, The University of Virginia
DESCRIPTION:The constituents of dark matter are still unknown\, and th
 e viable possibilities span a very large mass range. Specific scenario
 s for the origin of dark matter sharpen the focus on a narrower range 
 of masses: the natural scenario where dark matter originates from ther
 mal contact with familiar matter in the early Universe requires the DM
  mass to lie within about an MeV to 100 TeV. Considerable experimental
  attention has been given to exploring Weakly Interacting Massive Part
 icles in the upper end of this range (few GeV – ~TeV)\, while the re
 gion ~MeV to ~GeV is largely unexplored. Most of the stable constituen
 ts of known matter have masses in this lower range\, tantalizing hints
  for physics beyond the Standard Model have been found here\, and a th
 ermal origin for dark matter works in a simple and predictive manner i
 n this mass range as well. It is therefore a priority to explore. If t
 here is an interaction between light DM and ordinary matter\, as there
  must be in the case of a thermal origin\, then there necessarily is a
  production mechanism in accelerator-based experiments. The most sensi
 tive way\, (if the interaction is not electron-phobic) to search for t
 his production is to use a primary electron beam to produce DM in fix
 ed-target collisions. The Light Dark Matter eXperiment (LDMX) is a pla
 nned electron-beam fixed-target missing-momentum experiment that has u
 nique sensitivity to light DM in the sub-GeV range. This seminar will 
 give an overview of the theoretical motivation\, the main experimental
  challenges and how they are addressed\, as well as projected sensitiv
 ities in comparison to other experiments.
URL:https://www.physics.wisc.edu/events/?id=8178
END:VEVENT
END:VCALENDAR